Relining device for brake bands and the like



Sept. 23 1924. 1,509,658

' J. R. LEWIS RELINING DEVICE FOR BRAKE BANDS AND THE LIKE Filed Oct. 2,1920 2 Sheets-Sheet l Sept 23 1924. 1,509,658

J. R. LEWIS RELINING DEVICE FOR BRAKE BANDS AND THE LIKE mam PatentedSept. 23, 1924.

UNITED STATES 1,509,658 PATENT OFFICE.

JAMES R. LEWIS, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

INLAND ACCESSORIES CORPORATION OF ILLINOIS.

MANUFACTURING COMPANY, OF

CHICAGO, ILLINOIS, A

RELINING DEVICE FOR BRAKE BANDS AND THE LIKE.

Application filed October 2, 1920.

T aZZ whom it may concern:

Be it known that I, JAMns citizen of the United States, residing inChicago, Cook County, Illinois, have invented certain new and usefulImpr0vements in Relining Devices for Brake Bands and the like, of whichthe following is a specification.

My invention relates to means for applying a soft and flexible lining,such as leather or fabric, upon the metallic band constituting part ofthe braking or transmission apparatus of automobiles.

When the soft and flexible lining of such brake bands becomes worn outthe practice heretoforehas been to reline the bands by first cutting offthe old rivets by a hand hammer and chisel and then riveting the newlining in position by a hand hammer operation, a method which is slowand expensive and unless done with considerable skill the work is notsatisfactory through failure properly to clinch or turn over the rivetends to get them well below the surface of the lining, and because ofother irregularities incident to hand-tool work.

The present invention has for its chief object the provision of arelatively small machine, of simple, strong and few parts, in the use ofwhich the rivet-cuttin and reriveting operations may be expeditiouslyand cheaply performed, and whereby at the .same time a better and moresatisfactory result will be attained than according to the olderpractice pointed out.

In the accompanying drawings, which form a part of this specification,Figure 1 is a perspective of the machine complete as adapted forriveting the lining to the brake band shown; Fig. 2 is an enlargedmedial vertical fragmentary section showing the plunger and clip; Fig. 3is an enlarged detail in medial vertical section showing the end of theplunger and the clip viewed at right angles, to the position thereofshown in Fig. 2; Fig. 1 is a horizontal section on the line H of Fig. 3;Fig. 5 is a sectional view showing the anvil used in the rivetingoperation, the brake band being shown in cross sectional view. Figs. 2and 5 together show the co operative relationship of the plunger andanvil. Fig. 6 is a longitudinal vertical section through the anvil andits adjusting R. Lnwrs, a

its associated rivet-holding Serial No. 414,322.

means; Fig. 7 is aview like Fig. 6 and shows the anvil in its elevatedposition of adjustment. This figure also shows how the anvil spreads andturns the ends of the rivet. Fig. 8 is a medial vertical section showingthe substitution of elements to constitute the device a rivet cutter,the several parts being shown in operative position in the act ofsevering the lining from the band; and Fig. 9 is a fragmentary sectionalview of the base of the frame and a top plan of the anvil used in therivet cutting operation.

Referring to Fig. 1 the device illustrated includes an upright mainframe 15, in the form of a casting, having a forward integral lug orextension 16 bored to accommodate slidingly the plunger 17, an operatinghandle or lever 18 being pivoted at 19 upon the upper end of the frame.The lever 18 has an offset or bell-crank extension at 20 bifurcated toaccommodate the end of the link 21 pivoted to the extension 20 at 22.The other end of the link 21 is pivoted at 23 to the upper end of theplunger 17. The plunger 17 has a reduced part 17, and the hole 25 inwhich the plunger moves has a correspondingly reduced part at 25 (Fig.2) whereby a space 26 is provided to accommodate the compression coiledspring 27 the action of which is to elevate the plunger when thedownward pressure is removed therefrom by releasing the lever 18.

The lower end of the plunger is cylindrically bored at 30 to accommodatethe cylindrical stem 31. of the riveting head, Figs. 1, 2 and 3,01 thecylindrical stem 32 of the cutter shown in Fig. 8, a set screw 33' beingadapted to hold the stem firmly in its seat.

The riveting head shown in Figs. 1, 2 and 3 includes the stem 31mentioned, upon which is slidingly mounted a. collar-like part 35, therebeing a pair of flat spring .metal extensions 37 diametricallyoppositely disposed and rigidly held upon the collar 35, each of whichsprings 37 carries a foot 38 having an inclined surface 39, these feet38 normally bearing against the lower edge of the stem 31. The end ofthe stem is slightly hollowed or dish-shaped, as indicated at 40, Fig.3, to accommodate the convex head of the split rivet 41, and when therivet head is in the position there shown the feet 88 extend a shortdistance under the head and hold the rivet upon the stem 31. This stem31 constitutes an extension of the plunger, and is the hammer orpressurede ivering part of the device. A coiled expansion spring 42 ispositioned between the end of the plunger stem 17 a and the collar 35.From: Figs. 1 and 2 it will be seen that the collar 35 is held inposition by a pin 36 which is rigid with the stem 31 and extends looselyin a slotted opening ll in the collar 35, the construction enabling thestem 31 to move some distance relative to the collar and as far asdesired, while the pin remains in the slot 4A. 'In practice thisdistance is about one-eighth of an inch and its advantage is had at suchplaces as the hole 45, Fig. 1, in the brake band clamping device, whichhole 45 is in some cases large enough to accommodate the head of therivet and the end of the stem 31 and enables the l d. of the rivet to beapplied to the steel bandv l6 notwithstanding the additional thicknessof metal there. In such case when the feet 38 strike the part 65 thecollar 35 stops in its downward movement, but the stem 31, pushing therivet ahead of it, continues its movement about one-eighth of an inch.When a rivet is being applied to the brake band (consisting of the steelband it v V and the flexible lining 4:7) as shown in Fig.

1, the. operation of the handle causes the rivet 4C1 to enter the hole.as 18 in the steel band, and when the feet 38 come into contact with thesteel band 46, the feet are forced apart through the. operation of theslanting surfaces 39 overlying the end of the stem 31 and the stemforces the head of the. rivet firmly against the top surface 7 of theband,

The rivet 41 makes its own way through the flexible lining 4:7 andthereupon engages the top surface of the anvil 50, which is formed withan upstanding taperingsided and substantially conical projection 51surrounded by an annular depression or groove '52., Pressure upon thehead of the rivet ll causes, its legs to be separated by the projection51, and the recess 52 bends around the ends of the legs of the rivet,the beginning of the operation being shown in Fig. 7. When the stroke ofthe operating lever 18 is completed and a final sharp pull made upon itsit both rivet legs are turned over as shown by the one leg 53 in Fig. 8,the legs being forced, into the soft fabric well below its wear surfaceshown at 54: in that figure. For the next operation another rivet isinserted by hand at the end of the plunger by'slidingit laterally intoposition with its rim edge held by the feet 38.

The frame. 15 has a forward integral extension 55, constituting a baseor support for the. anvil 50, and this projection 55 is bored coaxiallywith the plunger to receive the stem 57 of the anvil head 50. The lowerend portion of the. hole 56; is threaded to receive the adjusting screw58 having the lock nut 59 thereon. The anvil stem 57 has its end formedwith a step or downward projection 60 on one side thereof, the end ofthe stem therefore having also a relatively high side 61, each side 60and 61 being defined by a plane 62 which is on diametric lines throughthe stem 57. The adjustin screw 58 is correspondingly provided witi astepped-up projection 63 providing a relatively low side 64:, and thestem and screw interfit with each other in one position of adjustment asshown by Fig. 6.

It is here pointed out that in some forms of brake hand construction metwith in repair practice it is necessary to use rivets of two differentlengths on the same band, namely in such cases as where the brake bandclamping part 65, Fig. 1, has a hole at which is large enough for thestem of the rivet but is not large enough to receive the head of therivet as in other cases hereinabove referred to.

here the lou er rivet is required the anvil head will be in its relativeposition as shown by Fig. 6. When the shelter rivet is to be ap )hed, asin the hole 48, Fig. 1, the anvil lead 50 is lifted a short distance andturned around on its axis throiwh one hundred and eighty degrees wherebythe projection will abut the projection 63 end to end, as seen in Fig.7, the anvil head being thereby raised the required amount. In order tomaintain the anvil in this raised position I )rovide studs 67 and 68 onthe screw 58 ac apted to interfit with correspondingly placed holes 69and 70 in the stem 57. y means of the screw 59 the anvil head 50 israised or lowered so as to bring it in its desired relationship to thethrow of the pluiwer and is then permanently secured in that position bymeans of the lockin nut 55). The other adjustment mentioned to providefor rivets of different lengths respcctively is one which may be madeeasily and quickly as the repair work goes along.

Vhen a brake band or the like requires relining the first operation isto remove the old lining, and I therefore provide for interchangeabilityof arts to enable the lining-removing operation to he performed upon thesame machine and in an easy and rapid way. Fig. 8 shows the insertion ofa chisel 32 in the axial hole 30 in the end of the stem 17 where it isheld by the set screw 33. The chisel has a sharp cutting edge at itslower end and the blade forces the fabric aside and cuts through therivet as seen in Fig. 8. To hold the brake band in its edgewise positionas shown by Fig. 8 for the rivet-cutting operation I provide a specialform of anvil 75 having an upstanding check 76 against which the band isheld, the cheek being provided With a vertical recess 77 adapted toaccommodate the head of the rivet, the brake band resting in a notch 78,the anvil 75 having a stem 79 adapted to fit into the hole 56 in thebase 55. The anvil is held in its desired position by projections 80engaging between them the projection 81 integral with the frame.

The principal use of the present device is in. automobile repair shops,and since in such shops the repair work of all kinds is done by men whoare not ordinarily skilled mechanics, the provision of a device whichwill enable such employees to reline brake bands and the likeexpeditiously and so as to produce a mechanically perfect job is highlyimportant on various grounds, in cluding the added safety to theoccupants of the car in the strong and otherwise proper connection ofthe flexible part to the steel band.

I claim:

1. In a tool of the character described, the combination of a rigidupright frame having a lower forward extension and a medial forwardextension, a vertically slidable plunger mounted in the medialextension, means on the lower extension for holding a riveting tool inline with the plunger, a hand lever pivotally mounted at the upper endof the frame and extending upward approximately vertically so as to bepulled upon first on approximately horizontal lines, said lever having ashort arm extending forward substantially at right angles to the handlever near the pivotal mounting, and a link connection between theplunger and said short arm, the lower end of the plunger having meansfor holding a cooperating riveting tool.

2. In a tool of the class described, the combination of a base having ahole there in adapted to receive the stem of an anvil, an anvil having astem projecting loosely into said hole, an adjusting screw in the basecoaxial with said hole, the end of the screw having a step constructionproviding a projection on one side thereof, the stem of the anvil havinga step construction including a projecti n on one side thereof, the twostep constructions substantially interfitting With each other with saidprojections side by side, the arrangement being such that by partiallywithdrawing the stem of the anvil and turning it on its axis theprojections will abut each other end to end..

JAMES R. LEWIS.

